Special feature : Masanobu was working at Late Edo period who was a grandchild of the Suo Masayuki and studied from Suishinshi Masahide. The blade is typical Masahide style Koto blade. Hamon looks like Rai school.

Historical background : 'Ee ja nai ka', showers of charms suddenly started and citizens of Kyoto started to dance and sing a song, and this occurred to every where in Japan. I understand our description does not make sense but such movement happens very often in Japan in each periods.